Roundabouts Database Index

29411 Results

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City, State County Country	Intersection (Lat, Lng)	Type Status	Control Type / Other Control Type	Approaches / Driveways / ICD (m)	Functional Class / LaneType	Year Completed	Comments
Redmond, WA King Co. United States	Eastridge Dr. NE / 244th Pl. NE (47.68499, -122.01300)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 16.8846	Other (At-Grade) Single-lane w/ Traversable Central Island	2014	Open July 2014. ICD estimated from Google Maps linework.
Granite Falls, WA Snohomish Co. United States	84th St. NE / 163rd Ave. NE (48.07206, -122.01269)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2024	https://www.facebook.com/SnoCoPW/videos/final-touches-are-taking-place-at-the-84th-st-ne-and-163rd-ave-ne-roundabout-in-/2124130604683380/
Sammamish, WA King Co. United States	SE Issaquah Fall City Rd. / 247th Pl. SE (47.56108, -122.00948)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)	2021	https://connect.sammamish.us/ifcr-project-look-ahead?category=11%2F5%2F19&tool=news_feed
Monroe, WA Snohomish Co. United States	W Main St. / SR 522 SB Ramps (47.84883, -122.00879)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 60.9600	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2014	Right-turn bypass lane on west leg. Open December 2014.
Walnut Creek, CA Alameda Co. United States	Walnut Ave. / Oak Grove Rd. (37.91432, -122.00770)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 22.6138	Other (At-Grade) Single-Lane	2000	Right turn bypass lane in northwest quadrant. ICD estimated from Google Maps linework.
Chilliwack, BC Fraser Valley Canada	Lickman Rd. / Yale Rd. / Luckakuck Way (49.14204, -122.00694)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 44.5348	Other (At-Grade) Single-Lane	2019	Planned to be changed to two-lane roundabout. https://www.theprogress.com/news/traffic-changes-now-in-effect-at-lickman-road-interchange/ ICD estimated from Google Maps linework.
Monroe, WA Snohomish Co. United States	SR 522 EB Ramps / 164th St. SE / Tester Rd. (47.84863, -122.00580)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 60.9143	Other (At-Grade) Multilane (2 Lane, unspecified)	2001	Completed August 2001. This project won the Washington State APWA 2001 Project of the Award and the ASCE Seattle Section 2001 Outstanding Project Award. The Project is documented in the Compendium of Papers for 2000 ITE District 6 Annual Meeting, San Diego, CA. Reconfiguration of two intersections into a roundabout. Previously controlled by two-way stop ICD estimated from Google Maps linework.
Enumclaw, WA King Co. United States	Semanski St. / Warner Ave. (47.19201, -122.00551)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.9560	Other (At-Grade) Single-Lane	2021	Next to Enumclaw High School. https://www.courierherald.com/news/council-awards-bid-for-roundabout-in-front-of-enumclaw-high/
Sammamish, WA King Co. United States	SE Issaquah-Fall City Rd. / Klahanie Dr. SE / 252nd Ave. SE (47.56365, -122.00398)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Multilane (2 Lane, unspecified)	2021	https://connect.sammamish.us/ifcr-project-look-ahead?category=11%2F5%2F19&tool=news_feed
Sammamish, WA King Co. United States	SE Issaquah-Beaver Lake Rd. / 256th Ave. SE / E Beaver Lake Dr. SE (47.57849, -121.99831)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.0040	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2019-2020).
Concord, CA Contra Costa Co. United States	Landana Dr. / Mulberry Dr. (37.97886, -121.99430)	Traffic Calming Circle Existing	All-Way Yield None	3 Approaches 0 Driveways 16.0041	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Granite Falls, WA Snohomish Co. United States	Granite Falls Access Rd. / Burn Rd. (NE 100th St.) (48.08656, -121.99060)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.2954	Other (At-Grade) Single-Lane	2010	November 2010. ICD estimated from Google Maps linework.
Granite Falls, WA Snohomish Co. United States	Granite Falls Access Rd. / SR 92 (48.08332, -121.99000)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 38.2978	Other (At-Grade) Single-Lane	2010	May 2010. ICD estimated from Google Maps linework.
Duvall, WA King Co. United States	Railroad Way NE / NE 143rd Pl. (47.72994, -121.98822)	Other Existing	All-Way Yield Unknown	3 Approaches 1 Driveways 32.3085	Other (At-Grade) Single-Lane	2020	Yield at entry, but no splitter islands.
Suisun City, CA Solano Co. United States	Charleston St. / McClellan Dr. (38.25614, -121.98578)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2002	Year Completed estimated (1993-2003).
Suisun City, CA Solano Co. United States	Charleston St. / Gunter Dr. (38.26212, -121.98570)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 48.7680	Other (At-Grade) Single-Lane	2004
Sundale, CA Alameda Co. United States	Walnut Ave. / Argonaut Way / Parkhurst Dr. (37.54260, -121.98521)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 33.5277	Other (At-Grade) Single-Lane	2015	Raised crosswalks. Year Completed estimated (2014-2015).
Duvall, WA King Co. United States	SR 203 (Carnation-Duvall Rd.) / 124th St. / Novelty Hill (47.70910, -121.98440)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.9865	Other (At-Grade) Multilane (2 Lane, unspecified)	2004	http://www.wsdot.wa.gov/projects/sr203/NE124thNoveltyRd/ Functional Class: Arterial ICD estimated from Google Maps linework.
Monroe, WA Snohomish Co. United States	SR 203 / 203rd Ave. SE / High Rock Rd. (47.81183, -121.98257)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-lane w/ Traversable Central Island	2024	Exclamation point shaped. https://www.reddit.com/r/SnohomishCounty/comments/1dqvzuu/new_sr_203_roundabout_brings_improved_safety/?rdt=38404
Duvall, WA King Co. United States	NE Big Rock Rd. / 3rd Ave. NE (47.72685, -121.98193)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 34.1373	Other (At-Grade) Single-Lane	2019
Granite Falls, WA Snohomish Co. United States	Granite Falls Access Rd. / Jordan Rd (48.09135, -121.97980)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 55.0445	Other (At-Grade) Single-Lane	2010	November 2010. ICD estimated from Google Maps linework.
Chilliwack, BC Fraser Valley Canada	Evans Rd. / Evans Pkwy. / Yale Rd. W (49.14521, -121.97764)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 53.9072	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	ICD estimated from Google Maps linework.
Chilliwack, BC Fraser Valley Canada	Keith Wilson Rd. / Tyson Rd. (49.10375, -121.97668)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.0000	Other (At-Grade) Single-Lane	2014
Chilliwack, BC Fraser Valley Canada	Tyson Rd. / Watson Rd. (49.11111, -121.97651)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 39.8718	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Chilliwack, BC Fraser Valley Canada	Columbia Valley Rd. / Sunnyside Blvd. / (parking) (49.07529, -121.97639)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 37.0000	Other (At-Grade) Single-Lane	2010	Year Completed estimated (2009-2011).
Chilliwack, BC Fraser Valley Canada	Vedder Mountain Rd. / Cultus Lake Rd. (49.09493, -121.97242)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 43.0131	Other (At-Grade) Single-Lane	2018	http://fraservalleynewsnetwork.com/2018/10/04/update-the-roundabout-to-cultus-lake-on-schedule-for-november-completion/ ICD estimated from Google Maps linework.
Monroe, WA Snohomish Co. United States	Chain Lake Rd. / N Kelsey St. (47.86475, -121.96958)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 29.6464	Other (At-Grade) Single-Lane	2014	Bing "On the Street" view shows it under construction ICD estimated from Google Maps linework.
Winters, CA Yolo Co. United States	SR 128 (E Grant Ave.) / Walnut Ln. / (parking lot) (38.52629, -121.96733)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.8992	Other (At-Grade) Single-Lane	2018	Year Completed estimated (2017-2018). ICD estimated from Google Maps linework.
Madison, CA Yolo Co. United States	SR 16 / CR 89 (38.68204, -121.96678)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways	Other (At-Grade) Single-Lane	2019
Chilliwack, BC Fraser Valley Canada	Vedder Rd. / Chilliwack Lake Rd. (49.09791, -121.96384)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.8444	Other (At-Grade) Single-Lane	2017	https://www.reminetwork.com/articles/unique-vedder-bridge-launch/ ICD estimated from Google Maps linework.
Monroe, WA Snohomish Co. United States	Country Crescent SE / County Crescent SE (47.86547, -121.96140)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2002	July 2002.
Santa Clara, CA Santa Clara Co. United States	Cypress Ave. / Cecil Ave. (37.32430, -121.95985)	Traffic Calming Circle Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 30.3920	Other (At-Grade) Single-Lane	2011	ICD estimated from Google Maps linework.
Fairfield, CA Solano Co. United States	Skymaster Circle (38.26961, -121.94804)	Other Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		At Travis Air Force Base. WWII bomber located in central island.
Santa Clara, CA Santa Clara Co. United States	Rivermark Plaza / Moreland Way (37.39525, -121.94684)	Other Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Vacaville, CA Solano Co. United States	Foxboro Pkwy. / Vanden Rd. / Rich Cir. (38.31708, -121.94625)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 50.2920	Other (At-Grade) Single-Lane	2019
Vacaville, CA Solano Co. United States	Vanden Rd. / Leisure Town Rd. (38.31717, -121.94312)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 45.7200	Other (At-Grade) Single-Lane	2017	Added lane right-turn bypass lanes on west and south legs.
Santa Clara, CA Santa Clara Co. United States	(shopping center entrance) / (parking) (37.35667, -121.93755)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 18.2880	Other (At-Grade) Single-lane w/ Traversable Central Island	2022	https://www.svvoice.com/coleman-costco-installing-roundabout/
Vacaville, CA Solano Co. United States	Carroll Way / Primrose Dr. (38.34930, -121.92726)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 41.1480	Other (At-Grade) Single-Lane	2019	Year Completed estimated (2019-2020).
San Ramon, CA Contra Costa Co. United States	Stoneleaf Rd. / W Branch Rd. (37.76337, -121.91875)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 30.4800	Other (At-Grade) Single-Lane	2011
Chilliwack, BC Fraser Valley Canada	Bailey Rd. / Prest Rd. / Teskey Way (49.11848, -121.91844)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.0842	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2015-2016). ICD estimated from Google Maps linework.
Chilliwack, BC Fraser Valley Canada	Prairie Central Rd. / Prest Rd. (49.14742, -121.91835)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.9676	Other (At-Grade) Single-Lane	2016	Year Completed estimated (2015-2016). ICD estimated from Google Maps linework.
Shasta Hanchett Park, CA Santa Clara Co. United States	Tillman Ave. / Hanchett Ave. (37.32998, -121.91643)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Shasta Hanchett Park, CA Santa Clara Co. United States	Martin Ave. / Tillman Ave. (37.32929, -121.91560)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Shasta Hanchett Park, CA Santa Clara Co. United States	Tillman Ave. / Sierra Ave. (37.32858, -121.91476)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Shasta Hanchett Park, CA Santa Clara Co. United States	Tillman Ave. / Yosemite Ave. (37.32791, -121.91395)	Traffic Calming Circle Existing	One-Way/Two-Way Stop Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Shasta Hanchett Park, CA Santa Clara Co. United States	Martin Ave. / Sequoia Ave. (37.33046, -121.91387)	Other Existing	Unknown Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane
Monterey, CA Monterey Co. United States	17 Mile Dr. / SR 1 SB On-Ramp (36.57448, -121.91295)	Roundabout Existing	All-Way Yield None	2 Approaches 0 Driveways 28.9560	Freeway Ramps (Grade-Separated) Single-Lane	2017	Raindrop shape. Right-turn-only lane on west leg.
Monterey, CA Monterey Co. United States	SR 68 / SR 1 SB Off-Ramp / 17 Mile Dr. (36.57529, -121.91281)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2017
San Ramon, CA Contra Costa Co. United States	Monarch Rd. / Main Branch Rd. (37.76644, -121.91149)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.4357	Other (At-Grade) Single-Lane	2006	ICD estimated from Google Maps linework.
San Ramon, CA Contra Costa Co. United States	S Monarch Rd. / Ivy Leaf Springs Rd. / Alpine Blue Dr. (37.76185, -121.91048)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 23.6048	Other (At-Grade) Single-Lane	2006	Opened with 2 approaches, third one added 2014-2015. ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Watermill Rd. / Watermill Rd. (37.75548, -121.90970)	Other Existing	Unknown Unknown	2 Approaches 0 Driveways 31.1610	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Watermill Rd. / Harcourt Way (37.75982, -121.90820)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 34.9361	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Watermill Rd. / Albion Rd. (37.76511, -121.90780)	Other Existing	Unknown Unknown	3 Approaches 0 Driveways 34.9336	Other (At-Grade) Single-Lane		ICD estimated from Google Maps linework.
Aptos, CA Santa Cruz Co. United States	Aptos Beach Dr. / Esplanade / Beach Dr. / Rio Del Mar Blvd. / Venetian Rd. (36.96915, -121.90525)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 20.9928	Other (At-Grade) Single-Lane	2015	date: https://localwiki.org/santacruz/Roundabout ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Valley Ave. / (unknown) (37.65670, -121.89670)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 28.3660	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Valley Ave. / E Gate Way (37.65487, -121.89530)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.3667	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Valley Ave. / Oak Vista Way (37.65349, -121.89390)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 27.4216	Other (At-Grade) Single-Lane	2000	ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Mill Creek Pl. / Oak Vista Way (37.65794, -121.89347)	Traffic Calming Circle Existing	Uncontrolled None	3 Approaches 1 Driveways 16.0738	Other (At-Grade) Single-Lane	2000	Year Completed estimated (1993-2002). ICD estimated from Google Maps linework.
Pleasanton, CA Alameda Co. United States	Valley Ave. / Pleasanton Ave. / Laguna Creek Ln. (37.65175, -121.89043)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2000
Pleasanton, CA Alameda Co. United States	Pleasanton Ave. / (park access #1) (37.65266, -121.88980)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2008
Pleasanton, CA Alameda Co. United States	Pleasanton Ave. / (park access #2) (37.65350, -121.88784)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Single-Lane	2008	Painted splitter island on north leg.
Fall City, WA King Co. United States	SR 202 / SR 203 (47.56919, -121.88690)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 21.7569	Other (At-Grade) Single-Lane	2007	Completed October 2007. ICD estimated from Google Maps linework.
Chico, CA Butte Co. United States	E Eaton Rd. / SR 99 NB Ramps / Hicks Ln. (39.77520, -121.87224)	Roundabout Existing	All-Way Yield None	5 Approaches 0 Driveways 0.0000	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2022
Chico, CA Butte Co. United States	W. 8th Ave. / Greenwich Dr. (39.73875, -121.86640)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 24.7968	Other (At-Grade) Single-Lane	2005	Functional Class: Local ICD estimated from Google Maps linework.
Chico, CA Butte Co. United States	W. 8th Ave. / Meadow Rd. (39.74013, -121.86330)	Roundabout Existing	All-Way Yield None	3 Approaches 2 Driveways 24.7963	Other (At-Grade) Single-Lane	2005	Functional Class: Local ICD estimated from Google Maps linework.
Fisherman Flats, CA Monterey Co. United States	SR 68 / Josselyn Canyon Rd. (36.58359, -121.85655)	Roundabout Unknown	All-Way Yield Unknown	3 Approaches 0 Driveways 46.7868	Other (At-Grade) Single-Lane		Anticipated opening year 2029.
Chico, CA Butte Co. United States	W. 8th Ave. / Magnolia Ave. (39.74451, -121.85270)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 25.7130	Other (At-Grade) Single-Lane	2005	Functional Class: Local ICD estimated from Google Maps linework.
Monterey, CA Monterey Co. United States	SR 68 / Olmsted Rd. (36.58399, -121.84976)	Roundabout Unknown	All-Way Yield Unknown	4 Approaches 0 Driveways 46.6344	Other (At-Grade) Single-Lane		Anticipated opening year 2029.
San Jose, CA Santa Clara Co. United States	Communications Hill Blvd. / Llano De Los Robles Ave. (37.28371, -121.84892)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.5760	Other (At-Grade) Single-Lane	2017	North leg added 2020.
Chico, CA Butte Co. United States	First St. / Salem St. (39.72980, -121.84300)	Other Existing	All-Way Yield None	2 Approaches 1 Driveways 18.3704	Other (At-Grade) Single-Lane	2012	Hybrid mini-roundabout / "drop off circle" at major bike/ped entrance into Chico State University. Completed 2012. ICD estimated from Google Maps linework.
Snoqualmie, WA King Co. United States	North Bend Way / (Snoqualmie Casino entrance) (47.51671, -121.84100)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 33.5280	Other (At-Grade) Multilane (2 Lane, 2x1 max)	2008	Through bypass lane on west leg. October 2008. ICD estimated from Google Maps linework.
Chico, CA Butte Co. United States	E 1st St. / E 2nd St. / Camelia Way (39.73168, -121.83847)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 32.0040	Other (At-Grade) Single-Lane	2013	Designed in tandem with conversion of First and Second Streets to a one-way couplet. Completed 2013.
Snoqualmie, WA King Co. United States	SR 202 / Tokul Rd. / Mill Pond Rd. (47.54073, -121.83292)	Roundabout Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 37.8938	Other (At-Grade) Single-Lane	2016	Open August 2016. ICD estimated from Google Maps linework.
Stevenson, WA Skamania Co. United States	SR 14 / Wind River Rd. (45.71510, -121.82857)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 39.1939	Other (At-Grade) Single-Lane	2019	Completed Summer 2019 (WSDOT). ICD estimated from Google Maps linework.
Del Rey Oaks, CA Monterey Co. United States	SR 68 / Canyon del Rey Blvd. / Monterra Rd. (36.58090, -121.82797)	Roundabout Unknown	All-Way Yield Unknown	4 Approaches 0 Driveways 52.5780	Other (At-Grade) Multilane (2 Lane, 2x2 max)		Anticipated opening year 2029.
Monterey, CA Monterey Co. United States	SR 68 / York Rd. (36.57156, -121.80839)	Roundabout Unknown	All-Way Yield Unknown	3 Approaches 0 Driveways 46.7868	Other (At-Grade) Single-Lane		Anticipated opening year 2029.
Rio Vista, CA Solano Co. United States	SR 12 / SR 113 / Birds Landing Rd. (38.18362, -121.80611)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.4901	Other (At-Grade) Single-Lane	2019	Still under construction in Sept. 2019, but operating as a roundabout. ICD estimated from Google Maps linework.
Chico, CA Butte Co. United States	Manzanita Ave. / Wildwood Ave. / East Ave. / Eaton Rd. (39.76229, -121.80540)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 40.3958	Other (At-Grade) Multilane (2 Lane, unspecified)	2009	Adjacent to fire station. ICD estimated from Google Maps linework.
Marina, CA Monterey Co. United States	Reservation Rd. / Seaside Ct. / Seaside Cir. (36.69201, -121.80258)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.5612	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Marina, CA Monterey Co. United States	Reservation Rd. / Robin Dr. (36.68986, -121.80249)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.5621	Other (At-Grade) Single-Lane	2014	ICD estimated from Google Maps linework.
Chico, CA Butte Co. United States	Manzanita Ave. / Hooker Oak Ave. (39.75974, -121.79950)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 28.4617	Other (At-Grade) Single-Lane	2009	Adjacent to park. ICD estimated from Google Maps linework.
Marina, CA Monterey Co. United States	Del Monte Blvd. / Beach Rd. (36.69360, -121.79737)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 30.6452	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
North Bend, WA King Co. United States	SR 202 / I-90 EB Ramps (47.48782, -121.79730)	Roundabout Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 41.9673	Freeway Ramps (Grade-Separated) Multilane (2 Lane, unspecified)	2007	Opened November 2007. ICD estimated from Google Maps linework.
Chico, CA Butte Co. United States	Manzanita Ave. / Vallombrosa Ave. (39.75850, -121.79620)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 26.6260	Other (At-Grade) Single-Lane	2009	Adjacent to park. ICD estimated from Google Maps linework.
Seaside, CA Monterey Co. United States	Divarty St. / A St. / 5th Ave. (36.65285, -121.79531)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 32.5778	Other (At-Grade) Single-Lane	2008	Year Completed estimated (2007-2008). ICD estimated from Google Maps linework.
Klamath Falls, OR Klamath Co. United States	Campus Dr. / Daggett Ave. (42.25262, -121.78769)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane	2022	https://www.klamathfallsnews.org/news/campus-roundabout-construction-progressing-well
Seaside, CA Monterey Co. United States	Inter-Garrison Rd. / 8th Ave. (36.65463, -121.78594)	Roundabout Existing	All-Way Yield None	3 Approaches 1 Driveways 33.5352	Other (At-Grade) Single-Lane	2017	ICD estimated from Google Maps linework.
Santa Teresa, CA Santa Clara Co. United States	Raleigh Rd. / Coronado Ave. (37.24222, -121.78522)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2017	Year Completed estimated (2016-2017).
North Bend, WA King Co. United States	E North Bend Way / Park St. / Downing Ave. (47.49288, -121.78223)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 29.8585	Other (At-Grade) Single-Lane	2019	https://northbendwa.gov/CivicAlerts.aspx?AID=916 ICD estimated from Google Maps linework.
North Bend, WA King Co. United States	E North Bend Way / SE Cedar Falls Way / (parking) (47.49096, -121.77876)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 42.6720	Other (At-Grade) Single-Lane	2008	August 2008.
Salinas, CA Monterey Co. United States	SR 68 ./ Pasadera Dr. / Boots Rd. (36.56766, -121.77857)	Roundabout Unknown	All-Way Yield Unknown	4 Approaches 0 Driveways 46.9087	Other (At-Grade) Single-Lane		Anticipated opening year 2029.
Sultan, WA Snohomish Co. United States	US 2 / Rice Rd. (47.86794, -121.77764)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 38.4579	Other (At-Grade) Single-Lane	2012	https://www.seattletimes.com/seattle-news/transportation/after-multimillion-dollar-plan-to-boost-highway-2-safety-has-the-effort-borne-fruit/ ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Tilia St. / Citron St. (38.54207, -121.77631)	Other Existing	All-Way Yield Unknown	3 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands on two legs.
Davis, CA Yolo Co. United States	Acer St. / Citron St. (38.54317, -121.77625)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Davis, CA Yolo Co. United States	Shasta Dr. / Olympic Dr. (38.55540, -121.77620)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 24.2833	Other (At-Grade) Single-Lane	1999	Previously controlled by one-way stop Functional Class: Arterial ICD estimated from Google Maps linework.
Watsonville, CA Santa Cruz Co. United States	Clifford Ave. / Pennsylvania Dr. (36.92259, -121.77482)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 19.0961	Other (At-Grade) Single-Lane	2014	https://patch.com/california/watsonville/watsonvilles-first-roundabout-opens ICD estimated from Google Maps linework.
Watsonville, CA Santa Cruz Co. United States	Ohlone Pkwy. / Manabe Ow Rd. (36.90461, -121.77358)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 32.4710	Other (At-Grade) Single-Lane	2016	Fourth leg stubbed. date: https://localwiki.org/santacruz/Roundabout ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Acer St. / Celadon St. (38.54316, -121.77348)	Other Existing	All-Way Yield Unknown	4 Approaches 0 Driveways 0.0000	Other (At-Grade) Single-Lane		No splitter islands.
Davis, CA Yolo Co. United States	Hutchison Dr. / Campbell Rd. (38.53686, -121.77170)	Roundabout Existing	All-Way Yield None	3 Approaches 0 Driveways 36.4343	Other (At-Grade) Multilane (2 Lane, unspecified)	2010	Near University of California Davis college campus. Previously controlled by one-way stop ICD estimated from Google Maps linework.
Davis, CA Yolo Co. United States	Hutchison Dr. / Hutchison Pl. / Sage St. (38.53933, -121.77160)	Roundabout Existing	All-Way Yield None	4 Approaches 0 Driveways 39.6240	Other (At-Grade) Single-Lane	2010	Near University of California Davis college campus. Constructed initially as two-lane roundabout; converted to single-lane in 2020-2022.